Question

When sugar and common salt are kept in different jars, they take the shape of the jars. Are they solid? Justify your answer.

Answer 1

When sugar and common salt are kept in different jars, they take the shape of the jars, still they are considered as solid .

Reason:

--->As, solids are rigid form of matter and have  fixed  shape and volume.
---->even though , common salt and sugar crystals when poured in any container, they take the shape of container, still each granule of common salt and sugar retain their fixed shape and volume .

Conclusion:
Hence they are considered as Solids. 

Answer 2

The state of the sugar or salt crystal don't change as they are little in size and when filling the container they likewise stay same as salt or sugar. Yet, in light of the fact that they are bigger in size, a few spaces can be seen between them. All in all state of badams continues as before. 
Both sugar and salt are initially the strong particles yet they are crystalline solids which have a customary and indistinguishable shape for every atom and they are extremely little in their size so they are arranged in a regular pattern and fill all the space of the holder so they appear like they have taken the state of the container.